RFR: 8357714: AudioClip.play crash on macOS when loading resource from jar

[Alexander Matveev]

On Wed, 2 Jul 2025 21:47:05 GMT, Johan Vos <jvos at openjdk.org> wrote:

> After JDK-8287822 (https://bugs.openjdk.org/browse/JDK-8287822), mpeg file content is no longer played via GSTPlatform but via OSXPlatform. 
> We need to correctly handle data in case the source is a file inside a jar, in which case CJavaInputStreamCallbacks is used.
> 
> The 2 changes I made are:
> 1. Use ConnectionHolder instead of Locator for CJavaInputStreamCallbacks in case a jar resource is used.
> 2. In case of random access datasource, use readBlock instead of readNextBlock in AVMediaPlayer

[8357714.0.patch](https://github.com/user-attachments/files/21113478/8357714.0.patch)
- Patch which does not do seek with random access and it will read data starting from `dataRequest.requestedOffset`.
- For size `requestedLength` is used. I do not see a need to use anything else. It will be limited to requested length or 1 Megabyte.
- Added `NULL` checks and `callbacks` release.

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PR Comment: https://git.openjdk.org/jfx/pull/1839#issuecomment-3047188025